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Tamron 20mm f/2.8 Di III OSD M1:2

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Prime lens

A prime lens by Tamron for Full frame cameras, 20mm f/2.8. A small, inexpensive wide prime that focuses close enough for half life-size.

Maker	Tamron
Focal length	20mm (prime)
Maximum aperture	f/2.8
Made for	Full frame sensors
Mounts	Sony E
Stabilised	no
Autofocus	yes

What it frames like

Its full-frame-equivalent focal length on the sensor it was made for.

How wide 20mm sees on each sensor it covers.

f/2.8 wide open, to scale against f/1.4.

On full frame (Sony E): as marked, 20mm.
On APS-C (Sony E): like 30mm on full frame; f/2.8 gives about the depth of field of f/4.2 there.

Cameras it fits

Compare with

See what it frames: its view on the Sony a7R VI at any distance, and its depth of field, drawn to scale.